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Inventories Inventories (Tables)
3 Months Ended
Mar. 31, 2013
Inventory Disclosure [Abstract]  
Schedule of Inventories
Inventories consist of the following (in millions):
 
March 31, 2013
 
December 31, 2012
Inventories at FIFO, net of reserves
$
362.3

 
$
456.7

Less: LIFO reserve
(93.2
)
 
(90.3
)
Total inventories at LIFO, net of reserves
$
269.1

 
$
366.4